Now this would only seem like common sense, but now research bears it out: some kinds of diets work better for some people than do others. Specifically, people with high-insulin do better with low-carb diets than with low-fat diets. This isn't as true for everyone else, though.

Something for all of us to think about when we find ourselves getting judgmental about the food choices of others: what is bad for me might not be so bad for you.